title: Plasma leptin, plasma zinc, and plasma copper are associated in elite female and male judo athletes.
abstract: The purpose of this study was to compare plasma leptin, plasma zinc, and plasma copper levels and their relationship in trained female and male judo athletes (n = 10 women; n = 8 men). Blood samples were obtained 24 h after training to measure plasma zinc, copper, and leptin levels. Subjects presented similar values to age (22 +/- 2 years old), body mass index (24 +/- 1 kg/m(2)), plasma zinc (17.2 +/- 2 micromol/L), copper (12.5 +/- 2 micromol/L), and leptin (5.6 +/- 1.3 microg/L). However, height, total body mass, lean mass, fat mass, and sum of ten-skinfold thickness were higher in male than female. Plasma leptin was associated with sum of ten skinfolds in male (r = 0.91; p < 0.001) and female athletes (r = 0.84; p < 0.003). Plasma zinc was associated with leptin in males (r = 0.82; p < 0.05) while copper was associated with plasma leptin in females (r = 0.66; p < 0.05). Our results suggest that young judo athletes lost sex-related differences in leptin levels. Plasma zinc, plasma copper, and energy homeostasis may be involved in regulation of plasma leptin.
authors.affiliation: Laboratório de Fisiologia Endócrina, Departamento de Ciências Fisiológicas, Instituto de Biologia, Universidade do Estado do Rio de Janeiro, Rio de Janeiro, Brazil.
authors.forename: Gustavo
authors.initials: G
authors.lastname: Casimiro-Lopes
authors.forename: Astrogildo Vianna
authors.initials: AV
authors.lastname: de Oliveira-Junior
authors.forename: Emilson Souza
authors.initials: ES
authors.lastname: Portella
authors.forename: Patrícia Cristina
authors.initials: PC
authors.lastname: Lisboa
authors.forename: Carmen Marino
authors.initials: CM
authors.lastname: Donangelo
authors.forename: Egberto Gaspar
authors.initials: EG
authors.lastname: de Moura
authors.forename: Josely Correa
authors.initials: JC
authors.lastname: Koury
mesh_terms: D000273:Adipose Tissue; D054874:Athletic Performance; D001827:Body Height; D015992:Body Mass Index; D003300:Copper / Q000097:blood*; D015444:Exercise / Q000502:physiology; D005260:Female; D006801:Humans; D020738:Leptin / Q000097:blood*; D008297:Male; D016139:Martial Arts; D012727:Sex Characteristics; D055815:Young Adult; D015032:Zinc / Q000097:blood*
chemical_list: D020738:Leptin; D003300:Copper; D015032:Zinc